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Period tracker for tweens (ages 9–12)

Written by Sofia, Bloomy teamLast updated July 2026

Most period trackers are built for adults trying to get pregnant. Bloomy is different — it's designed from the ground up for tweens, whether their first period has arrived or not.

Why tweens need a different app

A 10-year-old doesn't need fertility windows, ovulation predictors, or "trying to conceive" mode. She needs something that answers "when will my period start?" and helps her recognize what her body is doing right now. That's what Bloomy is.

What Bloomy does for tweens

  • Predicts a first period using age, breast development, discharge, and other early signs.
  • Explains signs in simple language — no scary medical words.
  • Tracks puberty milestones so predictions get sharper each month.
  • Grows into a full cycle tracker automatically when the first period arrives.
  • Stays private — data lives on her phone. No account. No ads. Nothing sold.

Safe for a 12 year old (and younger)

Bloomy is designed for ages 9+. Because there's no account, no chat, no social features, and no ads, there's nothing that pulls her into a wider internet. It's a private notebook that also does the math.

For parents

Many parents download Bloomy for their tween as part of "the talk". You can go through the signs together, take the quiz, and pack a first period kit for her backpack. When menarche happens, she opens the app and logs Day 1 — and the rest happens on its own.

Better than Flo or Clue for a tween

Flo, Clue, and most other trackers assume regular adult cycles. They ask about sex, contraception, and fertility. That's not what a 10- or 12-year-old needs. Bloomy skips all of it and focuses on her stage.

Track it all in Bloomy — free

Free, private, made for teens. Predicts your first period, tracks every cycle after.

Download on the App Store

Keep reading

→ First period quiz→ 8 signs your first period is coming→ First period kit checklist→ Period tracker for teens

Frequently asked questions

What's the best period tracker for tweens?+

Bloomy is designed for tweens as young as 9. It predicts a first period before it starts, uses simple non-medical language, and keeps everything private on the phone — no account, no ads.

Can a tween use a period tracker before their first period?+

Yes — with Bloomy. Most adult trackers assume you already have a cycle. Bloomy is one of the only apps that works before menarche, using age and puberty signs to predict when a first period will arrive.

Is a period tracker for a 12 year old safe?+

Bloomy is safe for 12 year olds. There's no account required, data stays on the device by default, no ads, and no sharing with third parties.

Should parents install a period tracker for their tween?+

Many parents download Bloomy alongside their tween so they can prepare together. The app is designed to be tween-first, so you can hand the phone over anytime.